Journal box mounting



i March 4, 1941. E. LATSHAW I JOURNAL BOX MOUNTING Filed Dec. 8, 1934Patented Mar. 4, 1941 5 JOURNAL BOX MOUNTING Elmer Lats'haw,Philadelphia, Pa., assignor to The J. G. Brill Company, Philadelphia,Pa., a corporation of Pennsylvania Application December 8, 1934, SerialNo. 756,600

, 10 Claims.

This invention deals with journal box mountlugs and especially withmountings wherein-the journal box will be resiliently-centered in thepedestal jaws, although it is equally advantageous in a bolster orsimilar mounting.

In previousjournal box mountings as constructed there has'been a metalto metal contact between the journal box and the truck frame which wasnecessarily noisy and transl mitted wheel noises to the truck frame andthence to the car body. Likewise a certain amount of looseness in ahorizontal and especially in .a transverse direction was necessary whichcaused heavy hammer blows to "be transmitted l to the truck frame underbraking forces and 25 It is another object of this invention to providea journal box mounting wherein the journal box is resiliently heldcentered yet is provided with portions adapted to cooperate with thepedestal jaws to absorb heavy shock loads.

30 It is a still further object to provide a journal box mounting thatwill not transmit wheel noises to t e truck frame.

These d other objects will be-apparent to any one skilled in the artfrom a, study of the accompanying description and drawing in whichFigure l is an elevation view, partly in section,

of a journal box mounting incorporating the present invention; Fig. 2 isa plan view, partly in section, of the -40 construction shown in Fig. 1,and,

Fig. 3 is an enlarged sectional view showing the relation of the journalbox and one of the pedestal jaws.

Referring now to the drawing in which like" 45 numerals refer to likeparts. The wheel A is attached to axle B which carries a journal box 6supporting a conventional truck frame .D through the spring E. The truckframe is provided with the usual pedestal jaws 2, tie bar 4 50 andspring pocket 6. In the instance shown the spring is of the helicaltype,although any form may be used, and is preferably insulated from thetruck frame or journal box by some resilient or non-resonant material.65 The journal box C which is shown as of the roller bearing type hasplates 8 attached to the usual jaw engaging portions on either side bythe machine screws I0. Attached to plate 8, in some manner such as byvulcanizing, is a block of resilient material I2, preferably rubber, 5which is also attached to a plate ll thus forming a unit F. Plate llrests against the pedestal jaws and is clamped immovably in place by thethrust members I 6 held on the frame by bolts l8. Any possible verticalmovement of outer plates 10 I4 is also prevented by stop shoulders l1formed on the pedestal jaws as clearly shown in Fig. 1. The thrustmembers, preferably of phosphorbronze, provide bearing surfaces 20 and22 adapted to cooperate with bearing surfaces 24 and 26 respectively onthe journal box. In the instance shown and as purely representative thesurfaces and 24 are spaced one-eighth inch while surfaces 22 and 26 arespaced one-quarter inch.

rebound the rubber will be placed in shear and restrain the rebound ofthe spring. It is therefore seen that the unit will act as a dampener to30 absorb any unusual vertical movements between the journal box andtruck frame.

The provision of the clearances between surfaces 20 and 24 will allowthe rubber on one side of the journal box to act in compression and onthe other side in tension to absorb normal movement of the journal boxin a longitudinal direction and yet will check this movement by contactof the surfaces before the rubber is overstrained. Thus any braking orsimilar forces will be absorbed by the rubber until they reach a certainvalue and then any force exceeding this value will be absorbed by themetallic bearing surfaces.

The clearances between surfaces 22- and 26 will allow a similarfunctioning of the unit in absorbing transverse movement with theexception that the rubber will be placed in shear to absorb anytransverse movement of the journal 3 box up to a certain amount. I

.It is readily seen that the journalbox is tied resiliently anduniversally to the side frame by .means which will resistmovement in anydirection up to a certain amount and that movement beyond this amount isprevented by metallic u contact, thus preventing a rupturing strainbeing placed on the rubber. It will also be seen that by designingtheunit as stated all normal forces are resisted by the rubber while allabnormal forces beyond a certain value are absorbed by the metalliccontact thus permitting the use of a smaller unit than would benecessary if rubber alone absorbed the entire force.

Although one specific arrangement and applicationof the invention hasbeen shown and described it is to be understood that the invention maybe adapted to other uses such as bolster mountings and that it is to belimited only in accordance with the appended claims. A

What is claimed is: 1. In a journal box mounting for a railway truckframe, longitudinally spaced pedestal jaws, a journal box located in thespace between the jaws, longitudinally'spaeed resilient means includingrubber loaded in shear connecting said box and jaws for universalmovement of a predetermined amount, andmeans preventing such movementbeyond said predetermined amount in at least certain directions.- 1

2. In a journal box mounting,- spaced pedestal jaws, a journal box,resilient means including rubber shear springs positively connectingsaid box andjaws and adapted to yieldingly center the box in the spacebetween the jaws by acting in compression, and meanspreventing'excessive yielding of said resilient means in both shear andcompression. I

3. In a journal box mounting, pedestal jaws, a

journal box between said jaws, means connect- 7 ing said journal box andjaws including a re,- silient element comprising rubber having platesvulcanized to opposite faces thereof, said conpedestal jaws andjournalbox for preventing relative movement therebetween beyond a predeterminedamount.

4.In a journal box mounting for a railway truck frame, longitudinallyspaced pedestal jaws on the frame, a journal box having bearing surfacesprojecting on either side of the frame, rubber shear springs positionedin the space between the pedestal jaws and journal box to restrain themovement of the latter, and means carried by the pedestal jaws andco-acting with the projecting bearing surfaces of the journal box forlimiting the movement of the journal box. 2

5. In ajournal box mounting, spaced pedestal jaws, a journal box in thespace between the pedestal jaws, resilient members having plates fixedto opposite sides thereof and positioned, in the space between thejournal box and pedestal jaws, and means fo'rfastening the plates to theadjacent pedestal and journal box walls.

-6. In a journal box mounting, spaced pedestal jaws, a journal lb'oxpositioned in the space between the pedestal jaws, resilient membershava ing spaced plates fixed thereto positioned in the space between thejournal box and the pedestal jaws, means for securing one of the platesof each resilient member-to said journal box in the space, thrustmembers fixed to the pedestal jaws, and means carried by the thrustmembers for engaging a plate of each resilient member.

r, 7..In a journal box mounting, spaced pedestal jaws, a journal boxpositioned in thespace between the pedestal jaws, spacer unitspositioned in the space between the journal box and pedestal jawsandeach including a body of resilient material having fixed theretoinner and outer metallic plates, means for securing the inner platestothe journal box, and means for removably securing the outer plates tothe pedestal jaws.

-hal box and pedestal jaws, means for securing the inner plates to thejournal box, thrust members removably secured to opposite, portions ofthe pedestal jaws in such a position as tocooperate with adjacentportions of thefjournal box, and means carried by the pedestal jaws, forengaging the outerplates. I

9. In a journal box mountin pedestal jaws, a. .journal .box positionedbetween the pedestal jaws, spacer unitseach includinga body of resilient"material having fixed thereto innerand outer metallic plates positionedbetween the journal box and pedestal jaws, means for securing the innerplates to the journal box, thrust members including bearing elementsfixed to the pedestal jaws in such, a position as to cooperate withadjacent portions of the journal box, means;

carried by the thrust members for engaging the outer plates, and meanson the journal box engaging the bearing elements for positively limitingthe movement of the parts. I

10. In a railway truck, in combination with a side frame having adownwardly opening pocket defined by jaws, each jaw having a pocketopening toward the other, a journal box disposed between said jaws andhaving pockets opening toward said jaw pockets, and a pad of resilientrubber disposed between each jaw andthe adjacent wall of said boxreceived in said pockets, each pad having at least one of thewearing'surfaces eng ed by said box and the associated jaw, providedwith a metal wear plate secured thereto. a I

ELMER LATSHAW;

